Merge branch 'perfcounters/urgent' into perfcounters/core

Conflicts:
	tools/perf/builtin-annotate.c
	tools/perf/builtin-report.c

Merge reason: resolve these conflicts.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

5 files changed, 38 insertions, 2 deletions

diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 534e20d14d63..f274e1959885 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -1503,10 +1503,21 @@ static void perf_counter_enable_on_exec(struct task_struct *task)
  */
 static void __perf_counter_read(void *info)
 {
+        struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
         struct perf_counter *counter = info;
         struct perf_counter_context *ctx = counter->ctx;
         unsigned long flags;
 
+        /*
+         * If this is a task context, we need to check whether it is
+         * the current task context of this cpu.  If not it has been
+         * scheduled out before the smp call arrived.  In that case
+         * counter->count would have been updated to a recent sample
+         * when the counter was scheduled out.
+         */
+        if (ctx->task && cpuctx->task_ctx != ctx)
+                return;
+
         local_irq_save(flags);
         if (ctx->is_active)
                 update_context_time(ctx);
@@ -1780,7 +1791,7 @@ static int perf_counter_read_group(struct perf_counter *counter,
         size += err;
 
         list_for_each_entry(sub, &leader->sibling_list, list_entry) {
-                err = perf_counter_read_entry(counter, read_format,
+                err = perf_counter_read_entry(sub, read_format,
                                 buf + size);
                 if (err < 0)
                         return err;
@@ -2008,6 +2019,10 @@ int perf_counter_task_disable(void)
         return 0;
 }
 
+#ifndef PERF_COUNTER_INDEX_OFFSET
+# define PERF_COUNTER_INDEX_OFFSET 0
+#endif
+
 static int perf_counter_index(struct perf_counter *counter)
 {
         if (counter->state != PERF_COUNTER_STATE_ACTIVE)
diff --git a/tools/perf/Documentation/Makefile b/tools/perf/Documentation/Makefile
index 5457192e1b41..bdd3b7ecad0a 100644
--- a/tools/perf/Documentation/Makefile
+++ b/tools/perf/Documentation/Makefile
@@ -35,7 +35,7 @@ man7dir=$(mandir)/man7
 # DESTDIR=
 
 ASCIIDOC=asciidoc
-ASCIIDOC_EXTRA =
+ASCIIDOC_EXTRA = --unsafe
 MANPAGE_XSL = manpage-normal.xsl
 XMLTO_EXTRA =
 INSTALL?=install
diff --git a/tools/perf/Documentation/perf-examples.txt b/tools/perf/Documentation/examples.txt
index 8eb6c489fb15..8eb6c489fb15 100644
--- a/tools/perf/Documentation/perf-examples.txt
+++ b/tools/perf/Documentation/examples.txt
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 96d421f7161d..4ac618b34254 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -28,6 +28,7 @@ static char		const *input_name = "perf.data";
 static char             default_sort_order[] = "comm,symbol";
 static char             *sort_order = default_sort_order;
 
+static int              force;
 static int              input;
 static int              show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
 
@@ -629,6 +630,13 @@ process_fork_event(event_t *event, unsigned long offset, unsigned long head)
                 (void *)(long)(event->header.size),
                 event->fork.pid, event->fork.ppid);
 
+        /*
+         * A thread clone will have the same PID for both
+         * parent and child.
+         */
+        if (thread == parent)
+                return 0;
+
         if (!thread || !parent || thread__fork(thread, parent)) {
                 dump_printf("problem processing PERF_EVENT_FORK, skipping event.\n");
                 return -1;
@@ -976,6 +984,11 @@ static int __cmd_annotate(void)
                 exit(-1);
         }
 
+        if (!force && (input_stat.st_uid != geteuid())) {
+                fprintf(stderr, "file: %s not owned by current user\n", input_name);
+                exit(-1);
+        }
+
         if (!input_stat.st_size) {
                 fprintf(stderr, "zero-sized file, nothing to do!\n");
                 exit(0);
@@ -1081,6 +1094,7 @@ static const struct option options[] = {
                     "input file name"),
         OPT_STRING('s', "symbol", &sym_hist_filter, "symbol",
                     "symbol to annotate"),
+        OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
         OPT_BOOLEAN('v', "verbose", &verbose,
                     "be more verbose (show symbol address, etc)"),
         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 3fc0d471b90b..d2e28820ee60 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -37,6 +37,7 @@ static char		*dso_list_str, *comm_list_str, *sym_list_str,
 static struct strlist   *dso_list, *comm_list, *sym_list;
 static char             *field_sep;
 
+static int              force;
 static int              input;
 static int              show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
 
@@ -1404,6 +1405,11 @@ static int __cmd_report(void)
                 exit(-1);
         }
 
+        if (!force && (input_stat.st_uid != geteuid())) {
+                fprintf(stderr, "file: %s not owned by current user\n", input_name);
+                exit(-1);
+        }
+
         if (!input_stat.st_size) {
                 fprintf(stderr, "zero-sized file, nothing to do!\n");
                 exit(0);
@@ -1615,6 +1621,7 @@ static const struct option options[] = {
         OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
                     "dump raw trace in ASCII"),
         OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
+        OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
         OPT_BOOLEAN('m', "modules", &modules,
                     "load module symbols - WARNING: use only with -k and LIVE kernel"),
         OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,